It is hardly ever pleasant to listen to an injector noise on your Audi A6. It is a noise that comes up repeatedly, usually when you accelerate or your engine is idling. However, this symptom may be connected to multiple kind of problems with your car injectors. It may not be anything serious, but when a frequent noise arises, you have to be sure. Especially since replacing your Audi A6’s injectors can be expensive. That’s why our team chose to write this article content in order to support you see more clearly, learn about the different plausible failures and identify your trouble. To do this, we will first look at the normal functioning and usefulness of the injectors in your Audi A6, then at the plausible reasons from which an injector noise may come.
Functions of the injectors
Injectors are a very important element of the operation of your engine. They were released to the modern cars about 20 years ago. Before their introduction, more conventional carburettor-type intake systems were used, which handled the intake of air and fuel into the engine cylinders. With the injectors, manufacturers now have the ability, thanks to the injectors pump, to control electronically each stage of the intake process very precisely (quantity of fuel injected, air/fuel mixture) via the analysis of the data received from the various sensors equipping the car (engine temperature, acceleration level, engine speed, etc.). Their purpose is therefore to inject under high pressure a precise quantity of an air/fuel mixture at a perfect timing to obtain the best possible combustion in the cylinders.
The different reasons of a clicking or knocking noise based on the injectors of your Audi A6
Listening injector noises on your Audi A6 may come from different locations, we will now center on the potential causes of these. In most cases, the typical noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be adopted to prevent them. If you listen to another clicking noise but it is not from your injectors, we suggest you to read this article content about clicking noise on Audi A6 to find the cause.
The reasons for injector clicking or knocking noise Audi A6
A clicking or knocking noise from your injectors can be explained for different reasons. In fact, the injectors of your Audi A6 have three main missions, to manage the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to ease its combustion. Then, its goal is to manage the air/fuel dosage and finally the homogeneity of the mixture, always with the objective of improving combustion. If one of these three characteristics is modified, the main role of the injectors will be disturbed and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Audi A6. The main cause of these situations usually comes from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible blockage will inevitably end in a malfunction of the injector. If after verifying, this noise comes from another part of the engine of your Audi A6, check this article content for more informations.
The side effects of injector noise on Audi A6
Now that we have examined the several causes for injector noise on your Audi A6, we will end by stating the possible end result of malfunctioning one or more of your injectors. Whether only one is blocked, or broken, or your entire fuel rail is involved, you cannot escape these repercussions which can almost instantly become major….
First, you risk destroying your exhaust system in the long run, because the unburned fuel residues that will end up in your exhaust system can corrode the metal in it.
One of the most common consequences felt by drivers is a significant loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will undoubtedly have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will almost instantly harm your cylinders or pistons and your engine may tighten.
Here are three little suggestions to limit the risks associated with your injectors and protect you from engine failure:
- Do not drive at the bottom of the tank, as you may absorb impurities
- Use quality fuel
- Think of swapping your diesel fuel filter regularly>
